If an industry currently dominated by three large producers whose revenues represent 30%, 30%, and 30% of the market's total revenues, with the remaining two firms each representing 5%, then the two largest firms merged, what would be the new four firm concentration ratio and the new Herfindahl-Hirschman Index for this industry?

Which of the following statements is(are) correct

a. As a result of the Great Depression of the 1930s, the quantity theory had come into disrepute, together with the rest of the classical theories. b. According to Friedman, the depression was caused by a fall in aggregate supply and not aggregate demand as believed by the Keynesians. c. As a result of the Great Depression of the 1930s, Friedman believed that the Keynesians had nothing to say about money demand. d. All of the above e. both b and c.

Of factors which affect any economy's production potential, the best two listed below are:

a. resources and technology. b. prices and outputs. c. wages and prices. d. taxes and prices. e. resources and prices.